The version of the plugin in the WordPress repository allows you to create a coming soon page or a landing page. The coming soon page setting will send all traffic to your domain to the coming soon page. It does not have the functionality you are asking for.
The Ultimate Landing Pages Advanced plugin, available at http://www.thinklandingpages.com, has the functionaity you are looking for. You can create multiple landing pages, set one as your home page, or as a coming soon page. It is what I use on http://www.thinklandingpages.com. It is like having a mini-theme inside your theme.